Jabez burns



j' BURNSI i 2' Sheets-Sheet l.

Coffee Roas''rl Patented Oct. 18, 1864.

. 2 lSheetsr'Sheet 2.

1. BURNS.`

Coffee Roaster.

Fatentdkt. 18., 1864.

UNrTnD STATES aTnNT runen.

JABEZ BURNS, OF NEW YORK, N. Y.

r COFFEE-ROASTER.

Specification forming part of Letters Patent N0. lhfllftll, datedOctober 18, 1864.

To LZZ whom it may concern:

Be it knownthat I, .IABEZ BURNS, of the city, county, and State of NewYork, have invented a new and Improved Coffee-Roaster; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which* Figure l represents a longitudinalvertical section of this invention; Fig. 2, an end View of the same.Fig. 3 is a detached longitudinal section of the cylinder. Fig. 4t is atransverse vertical section of the same.

Similar letters of reference indicate like parts.

This invention consists in the employment oruse of a cylinder whichrotates on frictionwheels by means of flanges projecting from one orboth of its ends, and which is provided with a stationary feed-box atone and with a rotary slide or other suitable gate opening at theopposite end, in such a manner that the coffee can be introduced intothe cylinder and discharged therefrom without stopping its motion orremoving Ait from its bearings, and that by this arrangement cylindersof a much larger caliber can be used and much more Work accomplishedthan by the ordinary method of hanging, charging, and discharging theroasting-cylinders. The interior of my cylinder is occupied by doublespiral flanges, one inside the other and running in opposite directionsin such a manner that by the action of one flange the beams arepropelled toward one and by the action of the other flange toward theopposite end of the cylinder, and the beams are made to travel back andforth through the cylinder without reversing the motion of the same.

A represents the roastingcylinder, which is supported at both ends withflanges a. .lhese 'lianges project beyond the furnace-Wall,whichsurrounds the cylinder, and they rest upon friction-wheels b, which aresecured in the proper position to the ends of the furnace wall, asclearly shown in Fig. 2 of the drawings. One of the heads of thecylinder is provided with a tubular projection,c, to which the cog-wheeld is firmly keyed; or it may be cast solid with the same, and instead ofa cog wheel a simple friction gear may be ernployed. This eogwheel gearsinto another siinilar cog-Wheel, c, on the driving-shaft f, by means ofwhich motion is imparted to the cylinder.

. B is the feed-box, from the bottom of which extends a pipe, g, intothe tubular projection c, as clearly shown in Fig. 2 of the drawings, sothat the contents of said feed-box can be easily let down into thecylinder whenever it may be desired. The interior of the cylinder isoccupied by two spiral iianges, h h', one inside the other, which are soarranged that one of them propels the beans toward one and the othertoward the other end of the cylinder, and the coffee is thus carriedback and forth through the entire length of said cylinder Withoutreversing the motion ofthe same. By this arrangement a uniform roastingof a comparatively large quantity of beans can be effected in a shortcylinder without danger of burning or scorching.

` That head of the cylinder opposite the feedbox is provided with one ormore openings, i, which are opened or closed by a rotary slide, j. Thisslide has its bearings on the central pivot, 7c, to which a lever, Z, isfirmly attached, so that by taking hold of this lever the slide can beeasily turned in either direction. The apertures i can thus be opened orclosed while the cylinder is in motion, and if a batch of coffee hasbeen in the cylinder sufficiently long to be roasted. the slide isturned and the apertures 'i are opened. The roasted coee is dischargedautomatically by the action of one of the spiral flanges 7L or h.

Instead of the rotary slide any other suitable gate may be applied,which can be opened and closed while the cylinder is in motiona Afterone batch of coffee has been discharged, the slides are closed and asecond batch is let into the cylinders, and the roasting proceedswithout ever removing the cylinder from its bearings or stopping itsmotion.

I claim as new and desire to secure by Letn ters Patenti l. rlheemployment or use of the frictiolr wheels b,in combination with theilanged heads of the cylinder A., constructed and operatingsubstantially as and for the purpose described.a

2. The application of the stationary feedtion with apertures i, langes hh', and rota-t-v box B to the rotating cylinder A. ing cylinders A,substantially as and for the 8. The double spiral flanges h h',extending purpose described. through the interior of the cylinder A andJABEZ BURNS. running in opposite directions7 substantially Witnesses: asand for the purpose set forth.v JAMES P. HALL,

4. The slide or gate j, applied in combinal NVM. F. MONAMARA.

